def add_two_numbers(a, b):
    return a + b
print(add_two_numbers(10, 20))
def is_prime(n):
    if n <= 1:
        return False
    for i in range(2, int(n**0.5) + 1):
        if n % i == 0:
            return False
        return True
print(is_prime(23))

def move(x,y,step):
    new_x = x + step
    new_y = y + step
    return new_x, new_y
result = move(100,100,60)
print(result)

def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n-1)

print(factorial(5))